Process of producing copper-nickel anodes.



N. V. HYBINETTE.

PROCESS OF PRODUCING COPPER NICKEL ANODES.

APPLICATION FILED JUNE 26,1913,

1,128,314. Patented Feb. 16, 1915.

(L. ROASTING MATTE 4 T) .LEACHINGOF- ROASTED MATTE wm: suwnumc ACID ELECTROLYSIS COPPER. v ON THECHT ACID soun'wm OF NLSOI;

gv'nPoRm'mw AND CRYSTHLLIZHTI0 I ACID W4 RETURNING TOLEACHING b) 6 "SMELTJNG OFHNODES FOR ELECTROLYTHC PRooucnow OF NHIKEL barren sat-acres radiance orr rcn.

NOAK VICTOR HYIBINE'ITE, OF CHRISTIANIA, NORWAY, ASSIGNOR TO PACIFIC SECURITIES COMPANY LIMITED, OF-TORONTO, CANADA.

PROCESS OF PRODUCING COPPER-NICKEL ANODES.

Specification of Letters Patent.

Patented net. it, 1915..

Original application filed June 5, 1912, Serial No. 701,780. Divided and this application filed June 26, 1913.

Serial No.

vember 28th 1905 under No. 805,969, I describe a process of refining copper nickel matte. The matte is first roasted and if the proportion of copper is large the roasted material is leached with sulfuric acid whereby a residue after leaching is obtained which contains copper and nickel in the ratio of about one to four. This material is then smelted to anodesfor electrolysis. The solution from such leaching contains mainly copper but some nickel is also dissolved,

The object of this invention-is to provide a certain way'of carrying out this leaching and handling the resulting solution which fits in with the main process'better than any other way.

In the accompanying drawing, I have diagrammatically illustrated my improved process.

The process consists in that the roasted material is placed in a leaching tank and leached with an acid solution of copper sulfate and nickel sulfate. This solution is partly neutralized by this leaching and its contents of copper and nickel is increased. It is however not allowed to remain so long in contact with the roasted material that all .acid is neutralized. It is then electrolyzed crystals.

ing. In this way the leaching and electrolys s goes on with a fairly constant composition of solution. The nickel contents is however increasing and-is allowed to increase until nearly the point where nickel sulfate begins to crystallize. A. small-part of solution is then taken away and electrolyzed until nearly all copper is removed. It is then crystallized whereby impure copper nickel crystals are obtained. The mother liquo; from the crystallization is returned to the main circulating body of solution with enough water and new acid added to make up for the loss represented by the impure These impure crystals are united with the leached matte and smelted into anodes dircctly or the crystals may first be roasted.

In the drawing I have represented the various steps diagrammatically by the reference'charactcrs a, b, "0, (Z, e, and have also indicated the products of the steps which it volve chemical action.

What I claim is The herein described process of producing copper nickel anodes for electrolytic separation comparatively low in copper from matte and other products comparatively high in copper consisting in roasting the matte and leaching the resulting oxide with diluted sulfuric acid electrolyzing the resulting acid solution for recovery of copper and crystallizing the solution for removal of nickel in the form of impure sulfate crystals. thereby regenerating the solution and uniting the im-- pure nickel sulfate crystals with the residue from leaching, smelting the nnxture and casting anodes substantially as described.

Signed at London, England, this 9th day" of June 1913.

NOAK VICTOR HYBINETTE. Witnesses:

H. D. JAMnsoN, O. J. WORTH. 

